Rumor identification: The use of hair dryers does not disinfect. Rumor analysis: the use of hair dryers can not play a disinfection role. High temperature of 56 ℃ to maintain more than 30 minutes to kill the new coronavirus, so the hair dryer hands and face blowing 30 seconds can not play a disinfecting effect, for the following reasons: 1, the optimal temperature of ordinary household hair dryer for 30 ℃ -40 ℃, the highest temperature is usually about 50 ℃, may not reach 56 ℃. 2, even if the hair dryer can reach 56 ℃ or even higher temperature, the hands and face for 30 seconds of continuous blowing, but also no disinfection effect. 3, When the temperature and time are met at the same time, it will cause skin damage such as skin burns, and this operation is not worth the cost. In addition, the new coronavirus is sensitive to ultraviolet light and heat, and fat solvents such as ether, 75% ethanol, chlorinated disinfectants, peroxyacetic acid and chloroform can effectively inactivate the virus. For hand and face disinfection, daily use of 75% alcohol is sufficient to achieve good disinfection. Special Note: During a new pneumonia epidemic, skin should be rinsed immediately when contaminated with contaminants and wiped with 0.5% iodophor or chlorinated disinfectant, alcohol for 3 minutes, and then washed with water. At the same time, home disinfection is especially important. Use chlorine disinfectant (e.g. 84 disinfectant) diluted once a day to disinfect the room; dishes can be boiled for 15 minutes or soaked in chlorine disinfectant for 30 minutes and then washed with water; clothes can be boiled for 15 minutes or soaked in chlorine disinfectant for 1 hour. In addition, open windows properly to keep the air circulating.